thonar



2 Sheet-Sheet 1.

(No Model.)

THONAR. MACHINE FOR CUTTING STONE.

T Patented Sept. 22, 1896.

2 Shee'tsSheet 2.

(N0 Modl.) I

M. THONAR.

MACHINE FOR GUTTING STONE Patented Sept. 22, 1896.

lll I ATTOR N EYS.

FFICE.

MICHEL THONAR, OF NAMUR, BELGIUM, ASSIGNOR, B Y MESNE ASSIGNMENTS, TOBATTERSON & EISELE, OF NEW YORK, N. Y.

MACHINE FOR CUTTING STONE.

SPECIFICATION forming part of Letters Patent No. 568,077, datedSeptember 22, 1896.

Application filed .Tuly2,1894. Serial No.516,379. (No model.) Patentedin Belgium September 30, 1884, No. 66,355; in Austria-Hungary J'ulyl,1885, No. 12,496 and No. 36,242, and in Germany July 19, 1885,11'0.34,060.

To all whom it may concern.-

Be it known that I, MIcHEL THONAR, a subject of the King of Belgium,residing at Namur, in the Kingdom of Belgium, have in- 5 vented certainnew and useful Improvements in Machines for Cutting Stone, (Case 13,) ofwhich the following is a specification.

Foreign patents have been granted to me upon the invention hereindisclosed as fol- 1o lows: in Belgium, No. 66,355, dated September 30,1884; in Germany, No. 34,060, dated July 19, 1885, and inAustria-Hungary, No. 12,496 and No. 36,242, dated July 1, 1885.

The machine forming the subject of this invention consists of a tubularroclccutting device adapted to form an annular channel in the rock orstone upon which it is set to act; a frame for holding and guiding thetubular cutter in a vertical or slightly-inclined position; a drivingdevice for imparting motion to the tubular cutter and adapted to permitthe cutter to be readily removed from the supporting-frame, andhoisting-gear attached to the frame for raising and lowering the tubularcutter and for withdrawing the core of rock or stone formedby thecutter, all of which will be fully described by reference had to theaccompanying drawings, in which-- Figure l is a side elevation of myimproved rock-cutting machine. Fig. 2 is a plan of the same. Fig. 3 is avertical section on the line 00 00, Figs. 1 and 2. Fig. 4 is ahorizontalsection on the line y y, Figs. 1 and 3; and Fig.

3 5 5 is an elevation of the frame with the tubuular cutter removed andshowing the core being removed from the rock by the hoisting device.

The frame consists of the head or top plate a, the ring 17, forming thebase, and the three vertical bars 0 c 0, connecting the head and,

base together.

The cutting device is composed of a tube d, thickened at its lower endor having a ring d secured to its lower end, said part d being formedwith upwardly-extending grooves for the passage of the debris due toaction of the cutter. These grooves are represented by the inclineddotted lines on the cutter-head d at the lower part of Fig. 1. Thistubular cutter passes freely through the circular base I) of the frameand rests on the rock, in starting, just inside said base. To its upperend is secured the central hub e by means of the arms ff, and this hub 6has a square hole formed in it through which passes the square shaft 9..The lower end of this shaft 9 is guided and controlled by being steppedin the plate h, which rests on the rock and is of a size to be heldcentrally by the tube cl. The upper end of the shaft 9 is provided witha sliding coupling i, adapted to connect it to the shaft j, which isfitted to rotate in a central bearing in the head a, and to the upperend of this shaft j is secured the driving-pulley 7.2. By means ofthissliding coupling 11 between the shafts g and j the shaft 9 may bereadily connected to shaft j when the tube a is placed in the frame inposition and ready to be rotated through the medium of the shafts fromthe driving-pulley 7t and disconnected from the shaft j when it isdesired to remove the tube from the frame. The frame is securelyheld inposition by means of the bracing rods or bars Z Z, secured at one oftheir ends to the rock and at their other ends to the top of the frameand provided with turnbuckles for adjusting the frame as desired.

To raise and lower the tube a, the winch m, which is secured to one ofthe vertical bars 0 of the frame, is connected to the upper end of thetube a by the following means:

A chain n from the winch is fastened to the cross-bar o, to the ends ofwhich are also secured one of the ends of the two cords or wire ropes p19. These ropes p p pass over the grooved pulleys q q, fitted to rotateon a bracket depending from the head a of the frame, and the other endsof the ropes p p are secured to the cross-head 1', which is fitted onthe upper part of the hub e of the tube a in such a manner that said hubis free to rotate in the cross-head and that it has no vertical movementindependent of 5 the other. This hoisting apparatusis also utilized toremove the core of rock or stone after the tube a has been removed fromthe frame by securing the ends of the ropes p 19, now detached from thecross-head r, to the raising-hook s, which is set into the top of thecore, as shown at Fig. 5. It is necessary to use water with apparatus ofthis description. In this case it is supplied at the interior of thetube and flows down the cut-made by the tube, thereby keeping itscutting edge cool, and flows upwardly on the outside of the tube,carrying with it the debris or chips formed by the cutting edge of thetube. The means here shown for guiding the driving band or rope t to andfrom the pulley 75 consists of two bent arms 10 and u, fitted withbearings, so as to be rotatable on the hub of the central verticalbearing of the shaft of the pulley on the head a and having at theirother ends hearings the axes of which are coincident with tangents ofthe pulley 7a. In these latter bearings are fitted journals of forkedarms o c, said journals being axially perforated for the passage of thedriving-rope. Pulleys w w are carried by the forked arms and are soarranged that the axes of the journals form tangents of them. The arms11 u and c t" are adapted to be set and clamped in any position, so asto properly guide the driving-ropet to and from the pulley it whateverthe direction of its travel may be. This driving-rope controlling andguiding device is covered and claimed in another application filed by meJuly 2, 1894, under Serial No. 516,378, so I do not claim it broadly inthis application.

I claim as my invention- 1. In a rock-cutting machine, the combinationof a tubular cutter, a supporting-frame, a central driving-shaft,carried at the upper end thereof, a shaft axially arranged in thetubular cutter so as to impart rotary motion thereto, a detachableoperative coupling connecting the two shafts, and a bearing-plateadapted to rest on the rock and guided by the interior of the tubularcutter and to receive and guide the lower end of the cuttershaft.

2. In a rock-cutting machine, the combination of a frame composed of aring-base, a top plate having a central bearing and bars connecting thebase and top plate together, a driving-shaft in the bearing of the topplate and provided with a pulley at its upper end, a tubular cutter heldcentrally in the frame and provided with a hub at its upper end,centrally perforated, and a shaft in line with and dc! achably connectedto the driving-shaft and formed to fit the perforation of the hub of thetubular cutter so as to impart rotary motion to the tubular cutterduring its longitudinal movement on said shaft.

3. In a rock-cutting machine, the combination of a frame composed of aring-base, a top plate having a central bearin g and bars connecting thebase and top plate together, a driving-shaft in the bearing of the topplate and provided with a pulley at its upper end, a tubular cutter heldcentrally in the frame and provided with a hub at its upper end,centrally perforated, a shaft in line with and detachably connected tothe driving-shaft and formed to fit the perforation of the hub of thetubular cutter so as to impart rotary motion to the tubular cutterduring its longitudinal movement on said shaft, and a bearing-plateadapted to rest on the rock in the interior of the tubular cutter and toreceive and guide the lower end of the cuttershaft.

4. In a rock-cutting machine, the combination of a tubular cutter, asupporting-frame, a central driving-shaft, carried at the upper endthereof, a shaft axially arranged in the tubular cutter so as to impartrotary motion thereto, and detachably connected in line with thedriving-shaft, a driving-pulley 011 the upper end of the driving-shaft,two adj ustable arms provided with bearings, the axes of which formtangents to this pulley, two guidepulleys, two arms carrying thesepulleys and having perforated journals fitted in the bearings of theadjustable arms, the axes of these journals being coincident withtangents of the guide-pulleys, and a drivingrope passing over theguide-pulleys through the perforated journals and around thedriving-pulley.

5. 111 a rock-cutting machine, the combination of a tubular cutter, asupporting-frame, a central driving-shaft, carried at the upper endthereof, a shaft axially arranged in the tubular cutter so as to impartrotary motion thereto, a detachable operative coupling connecting thetwo shafts, a cross-head attached to the upper end of the tubular cutterso as to move only in vertical directions therewith, a winch secured tothe lower part of the frame, and connecting cords or chains between thewinch and cross-head.

6. In a rock-cutting machine, the combination of a frame composed of aring-base, a top plate having a central bearing and three barsconnecting the base and top plate together, a driving'shaft in thebearing of the top plate and provided with a pulley at its upper end, atubular cutter held centrally in the frame and provided with a hub atits upper end, centrally perforated, a shaft in line with and detachablyconnected to the drivingshaft and formed to fit the perforation of thehub of the tubular cutter so as to impart rotary motion to the tubularcutter during its longitudinal movement on said shaft, a bearing-plateadapted to rest on the rock in the interior of the tubular cutter and toreceive and guide the lower end of the cutter-shaft, a winch secured toone of the frame-bars, pulleys on the under side of the head, bands orropes from the winch passing over these pulleys, and a cross-headpivotally connected to the hub of the tubular cutter and to which theends of the ropes from the winch are attached.

In testimony whereof I have signed this specification in the presence oftwo subscribing Witnesses.

MICHEL TI-IONAR.

Witnesses:

GEORG BEDE, RENI FERBISH.

